Built for short, direct connections, the Extreme Networks 20G DAC QSFP TO 1XSFPDD 3M supports a practical breakout path from a QSFP interface to a single SFPDD endpoint. That makes it a strong fit for tightly packed infrastructure where the goal is to connect compatible ports with minimal overhead and predictable cable management. As a passive DAC, this cable keeps the link simple. There are no transceivers to source, no optical power budget to manage, and no added complexity from active electronics. For teams standardizing copper interconnects in dense racks, that translates into faster deployment and fewer variables during installation and maintenance. The 3 m length is long enough for adjacent equipment placement while staying short enough to preserve tidy routing and low-latency direct attachment. When the application calls for a purpose-built copper breakout rather than a more expensive optical path, this cable delivers the right fit for the job.